Mixer



C. W. HOTTMANN, JR.

WXER

APPLICATION FILED ocT. I3` I92I.

1,406,457. l 4 Patented Feb. 14, 1922.

2 SHEETS-SHEET l .Z7 @vw zal 6 ATTORNEY? INVENTOR C. W. HOTTMANN, IR. MIXER.

APPLICATION FILED OCT. I3. I.92I. I 1,406,457, Patented Feb. 14, 1922.

2 SHEETS-SHEET 2.

'. INVENTOR unirse armes raranr orrics.

ciIARLns w. Herrmann',

Specification of Letters Patent. Padgfenjged. Feb, 14,. 1922 Application filed. october 1e, `1921.. serial No. 507,454.

T 0 all w 710m t may Concern Be it known that l, CHARLES lV. lierr- MANN, Jr., a citizeny otheUnite-d States, re-y siding at Sandusky, county ofEridState oi Ghioyhave invented a new and useful. lvfiiizer. of which the following is a speciication. A

My invention comprehends a novel construction of a mixer by the'employmentuoi which any suitable materialscan be properly` mixed together.

It further comprehends. a4 novel construe tionof a mixerlwherein` a novel circulation is impartedV to the materials which are being mixed. Y n It further comprehends a novell construction and arrangement of a Casin adapted to receive the materials to be mixed said casing having an inlet and discharge vport inl 'communication with a vnovel construction and arrangement of a conveyor adapted kto effect the circulation and mixing; the materials and also the discharge oi: the mixed materials from the mixer.; y

It further comprehends a novel construe tion and arrangement of agitator and scrapw ing member and novel means for actuating them.

It further comprehends a novel construe-l tionof a mixerwherein the casingwhich receives the materials to be mived is stationary and in which revolves a'novel construetion and arrangement of aiutating'` and scraping elements in com b,mation1 with a novel construction oi' conveyor orfeedine' Athis embodiment will be found iny 4practice to give satisfactory and reliable results. is, however, to be understood that the various instrumentalities 'of which my .inventa on -coasists.v can be variously arranged and organized and that my invention is not limited to the precise arrangement and organization of theseinstrumentalities as herein shown and described.

Figure l represents a ltop plan view of a K mixer7 embodying myiinvention.

Figure 2 represents afmixer in front ele.- vation: Y

Figurej -represents an end elevation of the mixer, H

*Figure 4. representsV a section on line if-fi 0f; Figure l.A

Similarnumerals of referencer indicate corresponding parts. 1. Y, f

lfleferringtofythe drawings,l o y l design-lates the frameof a mixer embodying' my invention. They frame l `liasjournailed in it a main driving' shaft 2 provided with a pulley 3 whereby it maybe driven by anydesiredjsource. of power. The driving shaft 2 lhas. fixed thereon` a.r pinion` @which meshes with a gear V5 mounted on a. conveyor or feed. shaft 6 Awhich ijsjournalled in a feed casing 7. The shaft `6 is provided with a helical bladeS.v The feed casing 7 is secured in .anyidesiredinanner with the bottomof a stationary casing Qcarried bythe frame and adapted to receive the materials to be. mixed. The casing 9 1s provided in its bottom with van inlet port l0 leadingto the chamber 11 Vof the feed casing 7 Aand with a port l2 leadingviirom the chamber il of thc feed casing?.

The drivingshaift 2 is provided with a VYworm lwhich meshes with a worm wheel lev carried by a shaft 15 which is vertically .disposed and is journalled in a lowerbearing 16 andan upper @bearing 17.. The upper bearing 1x is;V secured in any desired manner Awith a centrally located upwardly extending sleeve 18, which is connected with the bottom Aofthe casing 9 which receives the material .to be'mixed. g. f

The agitat-inLe.'v and scraping elements are Vconstructed.and.drivenin a novel manner.

A plurality ofthese agaritatingr and scraping `elements 20 fare employed. L `Each agit-ating and scrapingelement consists of a bar which is". vertically disposed fin close proximity Qto thesleeve l8llandat its lower Ild itis. liee@ ed, as at 21., in order to engage the bottom of the stationary casing 9 and its free end .is upwardly deflected, as at 22, and preferably curved so as to engage the side wall of the casing 9 and such, upwardly deflected portion 22 terminates a desired distance from the upper open end of the casing 9. y

The agitating elements 20 are. connected with a centrally located hub or support 23, the upper face of which diverges downwardly, as indicated at 2li. The support 23 is provided with a polygonal shaped aperture 25 with the walls of which a polygonal shaped end 26 of the shaft 15 is adapted to engage in order to effect the rotation of the support 23 and thereby of the agitatin elements 20. The feed casing 7 has its forward end controlled by means of a door 27 which is hinged, as at 28, and provided with a handle 29 which interlocks with a catch 80. The feed casing 7 at its discharge end is downwardly deflected, as at 31, in order to form a discharge spout.

It will be seen from Figures 1 and 4 that one wall of the inlet port 10 and the feed casing wall in proximity thereto is outwardly and downwardly inclined, as at 32, and the inner wall of the casing in proximity to the discharge port 12 is inclined o r bevelled in a similar manner, as seen at 33'. The opposite wall of the feed casing is substantially straight, as indicated at 34, while its bottom wall is rounded as will be best understood by reference to Figure 4.

The operation of my novel mixer will now be apparent to those skilled in the art to which this invention appertains an'd is as follows: f

The material which is to be mixed is placed within the casing 1. The driving shaftv 2 which is driven by any desired source of power effectsthe rotation ofthe shaft 15 and thereby of the agitating and scraper members 20 so that such members travel in the direction of the arrow seen in Figure 1. This will cause the materials to be fed towards the inlet port 10 through which the materials pass to the feed chamber 11. In this feed chamber l1 the feed screw or conveyor 8 forces the materials toward the forward end of the feed chamber 11 thereby causing them to pass upwardly through the delivery port 12 into the casing 9 sothat the circulation of the materials durinV the mixing operation is brought about. fter the materials have been' properly mixed: the

door 27 is opened andthe material will be fed from the feed chamber 11 and willdischarge from the delivery spout 31.

The scraping blades will prevent lthe material adhering to the bottom and to the sides of the casing 9 so thatall of the materials in the casing 9 will be discharged therefrom. The driving shaft 2 isxintergeared with the feedv shaft 6 so that the latter is driven at the proper speed, it being apparent from the drawings that the agitator or scraping blade has a slow revolving movement imparted thereto while the feed shaft 6 is driven at a higher speed.

It will now be'apparent that I have devised a new and useful construction of a mixer which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description, and while I have, in the present instance, shown and described an embodiment thereof which will give in practice satish factory and reliable results, it is to be understood that such embodiment is susceptible of g modification in various particulars without departing from the spirit or scope ofthe invention or sacrificing any of its advantages. Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is Y 1. In a mixer, a stationary casing having Vspaced ports in` its bottom one of which serves as an inlet port and the other as a discharge port, a feed casing, anda feed screw in saidv feed casing in proximity to said ports and exterior of said casing1 to cause the material to feed from said discharge port to said inlet port and tocirculate in said casing, said feed casing having an additional ldischarge port through which the material is discharged'after being mixed. 2. In ,a mixer, a stationary casing having spaced ports in its bottom one of which serves as an inlet port and the other as a discharge port, a feed screw in proximity to said ports and exterior of said casing to cause the material to feed from said discharge port to said inlet port and to circulate in said casing, and an auxiliary rotary member in said casing to facilitate the circulation therein ofl the material being mixed.

3. In a mixer, a casing having in its bot# i feed casing beneath said bottom communieating with said ports and' having one wall in' proximity to said ports substantially straightyand its opposite wall inclined, a

conveyor in said feed casing, means for said conveyor.

4. In a mixer, a casing having in its bottom an inlet port and a discharge port, a feed and actuating p. casing communicating with said port, a con- 'veyor in said feed casing, means to actuate tom an inlet port and adischarge port, a

feed casing beneath said bottom communieating with saidports, `a conveyor innsaid feed casing, actuating means for saidconveyor, said feed casing having a discharge,- opening in alignment with said, conveyor,

'tom an inlet port and a discharge port, am.

izo

and a door controlling said discharge opening.

6. In a mixer, ,a casing having an inlet port and a discharge port in its bottom, a feed casing communicating with said ports, a conveyor in said feed casing, a rotary element in said stationary casing, and means to .actuate said conveyor and rotary element and to cause said conveyor to be rotated at a greater speed than the speed of rotation of said rotary element.

7. In a mixer, a casing having in its bottom an inlet port and a discharge port, said' casinghaving its central portion upwardly deflected, a bearing in proximity to said upwardly deiected portion, .a shaft journalled in said bearing, an agitating and scraping element mounted on said shaft and having blades which engage the bottom andside walls of said casing, a conveyor to effect thc passage of material Jfrom said discharge port to said inlet port, and means to actuate said shaft and said conveyor.

8. In a mixer, a casing having in its bottom an inlet port and ,a discharge port, said casing having its central portion upwardly deflected, a bearing in proximity to said upwardly deflected portion, a shaft journalled in said bearing, an agita-ting and scraping element mounted on said shaft and having blades which engage the bottom and side walls of said casing, a conveyor to effect the passageof material from said discharge port to said inlet port, and means to actuate said shaft and said conveyor, said agitat-ing and scraping element including a centrally located support, the upper 'liace of which diverges downwardly.

CHARLES IV. HOT'IMANN, JR.

Witnesses:

FERDINAND C. H. MLLER, CONRAD HUNTER. 

